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ADP1621ARMZ Datasheet(PDF) 10 Page - Analog Devices

No. de pieza ADP1621ARMZ
Descripción Electrónicos  Constant-Frequency, Current-Mode Step-Up DC/DC Controller
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Fabricante Electrónico  AD [Analog Devices]
Página de inicio  http://www.analog.com
Logo AD - Analog Devices

ADP1621ARMZ Datasheet(HTML) 10 Page - Analog Devices

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ADP1621
Rev. A | Page 10 of 32
250
0
–40
160
CS LEAKAGE (nA)
VIN = 5V
CS = 30V
200
150
100
50
10
60
110
Figure 17. Temperature vs. CS Leakage
8
–16
–50
150
TEMPERATURE (°C)
4
0
–4
–8
–12
0
50
100
VFB = 1.2113V AT 25°C
FB BIAS CURRENT IS MEASURED
BY FORCING A CONSTANT 1.2113V
OVER THE TEMPERATURE RANGE.
Figure 18. FB Bias Current vs. Temperature
90
0
1.0
fSYNC/fOSC
2.2
fOSC = 200kHz
fOSC = 550kHz
80
70
60
50
40
30
20
10
1.2
1.4
1.6
1.8
2.0
Figure 19. Slope-Compensation Current vs. fSYNC/fOSC
1.6
0
–50
150
TEMPERATURE (°C)
0
50
100
1.4
1.2
1.0
0.8
0.6
0.4
0.2
VIN = 5V
SDSN = 0V
Figure 20. Shutdown IN Current vs. Temperature
1.2165
1.2120
–50
150
TEMPERATURE (°C)
050
100
VIN = 5V
SDSN = 0V
1.2160
1.2155
1.2150
1.2145
1.2140
1.2135
1.2130
1.2125
Figure 21. FB Voltage vs. Temperature
CH1 5V
CH2 5V
CH4 500mAΩ
M2µs
A CH1
2.9V
1
2
4
TA = 25°C
VIN = 3.3V
VOUT = 5V
LOAD = 0.1A
DCM OPERATION
CH1 = GATE
CH4 = INDUCTOR CURRENT
CH2 = DRAIN VOLTAGE
Figure 22. DCM Switching Waveform


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